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Digital signal data bit width truncation method

A digital signal and data bit width technology, applied in informatics, complex mathematical operations, instruments, etc., can solve problems such as inability to make full use of signals, and achieve the effect of improving signal processing accuracy

Active Publication Date: 2019-01-08
NO 50 RES INST OF CHINA ELECTRONICS TECH GRP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Whether it is fixed interception or manual interception, it is impossible to make full use of the bit width of the signal and improve the processing accuracy in the signal processing process.

Method used

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  • Digital signal data bit width truncation method
  • Digital signal data bit width truncation method
  • Digital signal data bit width truncation method

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Embodiment Construction

[0026] The present invention will be described in detail below in conjunction with specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0027] See attached figure 1 , the digital signal data bit width adaptive truncation processing method is mainly composed of four parts: signal estimation, high bit discrimination, displacement processing and data truncation. Firstly, the signal estimation realizes the prediction of the amplitude value of the signal; secondly, the high-order discrimination realizes the determination of the highest position of the signal through the estimated amplitude value of the signal; thirdly, the transpositio...

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Abstract

The invention provides a digital signal data bit width intercepting method, comprising the steps of 1, signal estimation, specifically including estimating the amplitude of a digital signal; 2, high order judgment, specifically including through high order judgment on the amplitude parameter of the signal, allowing the amplitude of the input signal to have the maximal effective bit width, and outputting a maximal bit number and a digital signal processing mode; 3, deflection processing, specifically including computing the overall output bit width of data according to the maximal bit number and the digital signal processing mode; and 4, data interception, specifically including intercepting or extending the bit width of the digital signal according to the overall bit wide of data. According to the digital signal data bit width intercepting method, through signal estimation on the input signal of the system, the amplitude parameter of the signal is estimated, and the bit width of the output signal of the system is self-adaptively adjusted to fully utilize the effective bit width of the signal, and thereby the signal processing accuracy during the digital signal processing process is enhanced.

Description

technical field [0001] The invention relates to the technical field of digital signal processing, in particular to a method for truncation of digital signal data bit width. Background technique [0002] In digital signal processing, digital filter is the most common signal processing method. The bit width in the filter often plays a vital role in the signal-to-noise ratio and filtering effect of the signal, especially in cascaded digital filters. [0003] In the field of digital signal processing, it is often necessary to perform truncation processing on the data bit width. Data truncation processing often plays a vital role in the signal quality and signal-to-noise ratio in the signal processing process. Only when the signal processing is done reasonably Only by truncation or expansion of the bit width can more accurate digital signal processing be performed. [0004] At present, the main truncation processing methods in the prior art are as follows: 1. debug and modify a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/15
CPCG16Z99/00
Inventor 苗迎强金琦
Owner NO 50 RES INST OF CHINA ELECTRONICS TECH GRP